ASME-BTH June 5, | Author: Nanang Komarudin | Category: Strength Of Materials, Engineering, Mechanical Engineering, Science, Nature. Buy ASME BTH 1: DESIGN OF BELOW-THE-HOOK LIFTING DEVICES from SAI Global. ASME BTH Design Of Below-The-Hook Lifting Devices. Be notified when this Standard is updated or amended – Add to StandardsWatch. General.
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The design factors are given in para.
Members that are of such proportions and material properties that allow development of a plastic moment will have the same maximum bending strength i. The value of Vp shall consider the altitude where the lifting bth-1-201 will be used. The effective length of a fillet weld shall be the overall length of the full-size fillet including end returns.
Of importance when evaluating the effects of temperature is the temperature of the lifter component rather than the ambient temperature. Unintended loss of power shall not disconnect the pad s from the vacuum preservation method.
In order to inhibit unintentional operation of the lifter, one of the following options should be considered: If larger holes are necessary, the test results reported in Kulak et al. The strength of the part is the sum of the allowable tensile stress acting on the indicated tensile area plus the allowable shear stress acting on the indicated shear area.
The Wire Rope Users Manual, 3rd edition, Table 12 provides information on sizing the wire rope groove with respect to the wire rope to allow for a proper seating surface. The maximum fillet weld size is based on the thickness of the connected parts. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings.
ASME-BTH – Free Download PDF
The shear plane area defined by eq. Participation by federal agency representative s or person s affiliated with industry is not to be asms as government or industry endorsement of this code or standard. Some manufacturers of heavy equipment such as power generation machinery build lifters to be used for the handling of their equipment.
CL hole be other than to require that the strength of the connected pieces within the connection provide a design factor of at least 1.
The Service Class establishes allowable stress range values for lifter structural members and design parameters for mechanical components. Peak stresses resulting from locked rotor or btg-1-2014 incidents abnormal conditions are not applicable in the fatigue calculation.
The Committee welcomes proposals for revisions to this Standard. Thus, assessment of the fatigue life of a lifter may normally be performed using only static stresses calculated from the rated load.
Our representatives are ready to assist you in the following areas: Using these values, eq. The allowable tensile strength through the pinhole, Pt, shall be calculated as follows: The value of Cr may be taken as 1. The proposed code or standard was made available for public review and comment that provides an opportunity for asm public input from industry, academia, regulatory agencies, and the public-at-large.
The SI units in the text have been directly softly converted from U. The lifting device specifications shall state the location of the operator interface chosen by a qualified person from the following options: To 5 b Combined shear fatigue stress shall not exceed In bth-12-014 a case, use of a method that accounts for the effects of local deformations of the plates may be used e.
For an I-shape member for which the unbraced length of the compression flange falls into the range defined by eq. Customary units Fyksi p These load conditions are characteristic of use of the lifter in work environments where the weights of the loads being handled are reasonably well known, and the lifting operations are conducted in a controlled bth-1-201.
When a lifter is being modified, its design shall be reviewed relative to this Standard, and the need to meet this Standard shall be evaluated by the manufacturer or a qualified person. The strength factors above are used in formulas containing diametral pitch. In general, this effective throat thickness is considered to be on a deg angle from the leg and have a dimension equal to 0.